Redhead MSF, Definitely Defined, Light Year MSF
The colours are subtle so the differences don't swatch well.
Light Year is the most orangy, Definitely Defined the pinkest and most frosty. When swatched lightly on the skin, the differences are all but disappear. Do I need all 3? Nope, and you probably don't either.
Light Year, Definitely Defined
Shell Pearl, Redhead
Hope this helps a bit - I hate having to order blind.
Team 'Highlighter No Buy'. If Shape the Future arrives today I'll try to post some comparison pics with it.